Geil is ok for ram, you may want to step up to a 650w if you plan on doing a lot of overclocking. If not the 600 will be fine.

What site are you shopping at? There may be better deals than what you have listed.

oc to 4.5-5ghz if the mb ASUS M5A78L-M/USB3 suport that speed and the COOLER MASTER BLIZZARD T2 its a good cooler for smal oc???
for 4.5-5ghz 600 its good or its better change for earocool templarius 650w???
i will buy at http://alientech.pt/ (im from portugal